液压挺柱配气机构动力学分析优化与试验验证  

Dynamic Analysis Optimization and Experimental Verification of Hydraulic Tappet Valve Train

作　　者：韩佩良 王延荣 张丽 孙亚奇 刘旭康 王根全 HAN Peiliang;WANG Yanrong;ZHANG Li;SUN Yaqi;LIU Xukang;WANG Genquan(China North Engine Research Institute,Tianjin 300400,China)

机构地区：[1]中国北方发动机研究所,天津300400

出　　处：《机床与液压》2024年第16期87-92,共6页Machine Tool & Hydraulics

摘　　要：以某型高强化柴油机配气机构为研究对象,将原机械挺柱改为液压挺柱,设计新状态凸轮型线,改良配气机构的结构,基于AVL EXCITE Timing Drive软件建立液压挺柱配气机构的动力学模型,并进行动力学分析。结合实际工况,在全转速范围内开展整机可靠性试验。结果表明:液压挺柱配气机构工作稳定、运行良好,且试验结束后气门下沉量较机械挺柱配气机构大幅度下降,验证了液压挺柱配气机构对高强化柴油机气门-气门座圈磨损的改善效果,可为气门座圈减磨降磨方案设计提供参考。Taking the valve train of a high-strength diesel engine as the research object,the original mechanical tappet was changed to a hydraulic tappet,a new state cam profile was designed,and the structure of the valve train was improved.Based on AVL EXCITE Timing Drive software,the dynamic model of the hydraulic tappet valve train was established,and the dynamic analysis was carried out.Combined with the actual working conditions,the reliability test of the whole machine was carried out in the full speed range.The results show that the hydraulic tappet valve train works stably and runs well,and the valve sinking after the test is significantly re duced compared to the mechanical state valve train.The improvement effect of the hydraulic tappet valve train on the wear of the valve-valve seat ring of the high-strength diesel engine is verified,which can provide a reference for the design of the valve seat wear reduction scheme.

关 键 词：液压挺柱 动力学优化 可靠性试验 减磨 

分 类 号：TH122[机械工程—机械设计及理论] TK422[动力工程及工程热物理—动力机械及工程]